To validate XML files against a schema, you can use XML ValidatorBuddy as an XML tool that supports various schema languages, such as XSD, DTD, Schematron, and JSON Schema. You can either select a schema file from your local system or use a URL to reference a schema. You can also use a schema to a folder and validate multiple XML files at once.

XML ValidatorBuddy can generate documentation for XML schemas using the Generate Schema Documentation command. This command will create an HTML file that contains information about the schema elements, attributes, types, annotations, diagrams, and more.

XML ValidatorBuddy can format and beautify XML files using the Format and Pretty-print commands. You can also format and beautify multiple XML files at once and large XML data.